salver vs tray

salver and tray both are nouns.

Word	Noun	Adjective	Verb	Adverb
salver	Yes	No	No	No
tray	Yes	No	No	No

As nouns, tray is a hypernym of salver; that is, tray is a word with a broader meaning than salver:

salver: a tray (or large plate) for serving food or drinks; usually made of silver
tray: an open receptacle for holding or displaying or serving articles or food

salver (noun)	tray (noun)
a tray (or large plate) for serving food or drinks; usually made of silver	an open receptacle for holding or displaying or serving articles or food